package day03;

public class OperDemo5 {
    public static void main(String[]args){
        int age = 22;
        System.out.println("age=");//age=
        System.out.println("age="+age);//age=22
        System.out.println("我今年"+age+"岁了");//我今年22岁了


        String name = "yss";
        System.out.println("大家好，我叫"+name+"今年"+age+"岁了");//大家好我叫yss今年22岁了

        System.out.println(20+25+""+30);//4530
        System.out.println(""+20+25+30);//202530
        System.out.println(20+25+30+"");//75


    }
}
